Performance reliability of polymorphic systems by fuzzy fault tree based on T-S model

被引：6
|
作者：
Sun L. [1 ]
Huang N. [1 ]
Wu W. [1 ]
Li X. [1 ]
机构：
[1] School of Reliability and Systems Engineering, Beihang University, Beijing
来源：
Huang, Ning (hn@buaa.edu.cn) | 1600年 / Chinese Mechanical Engineering Society卷 / 52期
关键词：
AFDX; Fault tree; Multi-state system; Performance reliability; T-S model;
D O I：
10.3901/JME.2016.10.191
中图分类号：
学科分类号：
摘要：
T-S fuzzy fault tree is a kind of fault tree constructed by a series of T-S gates with IF-THEN logic. This can solve the multi-state issue, uncertainty of failure mechanism, and that failure rate of the basic event is not accurately known in complex systems. Currently, this method mainly analyzes the system function failures. As a result, system has different performance reliability under different fault conditions. In practice, many of the internal failures of complex polymorphic systems often cause performance degradation, and multiple performance status appears. By using the expectation theory of statistics, giving performance variable for system and different performance values at different fault conditions, a method analyzing the performance reliability of a polymorphic system has been proposed. This method can also compute conditional expected performance reliability in condition of knowing the basic event's or middle event's failure. The performance reliability of avionics full duplex switched ethernet(AFDX), which is currently used on large aircraft, is analyzed by this method. © 2016 Journal of Mechanical Engineering.
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页码：191 / 198
页数：7
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